/*

 * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/* @test

 * @bug 4607272 6842687

 * @summary Unit test for java.nio.channels.AsynchronousFileChannel

 * @build CustomThreadPool MyThreadFactory

 * @run main/othervm -Djava.nio.channels.DefaultThreadPool.threadFactory=MyThreadFactory CustomThreadPool

 */

import java.io.File;

import static java.nio.file.StandardOpenOption.*;

import java.nio.ByteBuffer;

import java.nio.channels.*;

import java.util.concurrent.atomic.AtomicReference;

public class CustomThreadPool {

    public static void main(String[] args) throws Exception {

        File blah = File.createTempFile("blah", null);

        blah.deleteOnExit();

        AsynchronousFileChannel ch =

            AsynchronousFileChannel.open(blah.toPath(), READ, WRITE);

        ByteBuffer src = ByteBuffer.wrap("Scooby Snacks".getBytes());

        final AtomicReference<Thread> invoker = new AtomicReference<Thread>();

        ch.write(src, 0, invoker,

            new CompletionHandler<Integer,AtomicReference<Thread>>() {

                public void completed(Integer result, AtomicReference<Thread> invoker) {

                    invoker.set(Thread.currentThread());

                }

                public void failed(Throwable exc, AtomicReference<Thread> invoker) {

                }

            });

        Thread t;

        while ((t = invoker.get()) == null) {

            Thread.sleep(100);

        }

        ch.close();

        // check handler was run by known thread

        if (!MyThreadFactory.created(t))

            throw new RuntimeException("Handler invoked by unknown thread");

    }

}